US PATENT SUBCLASS 277 / FOR 235
.~.~ Hard material (277/224)

Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

FOR 227  DF  SPLIT ANNULUS (227/216) {4}
FOR 234  DF  .~ With insert (277/223) {1}
FOR 235.~.~ Hard material (277/224)

DEFINITION

Classification: 277/FOR.235

Foreign art collections wherein the insert is made of a material which is harder than that of the remainder of the packing element.